Here's how CNN characterizes Obama's consistent, across-the-board polling leads in Ohio:
A new CNN Poll of Polls on Monday indicates the race in Ohio ... is locked in a statistical dead heat [italics mine].
The poll shows President Barack Obama at 50% and Mitt Romney at 47% in Ohio, one day before the election. Those numbers are an average of three Ohio polls of likely voters conducted in the last week.
Other polls--lots and lots of other polls--have shown similarly favorable leads for Obama, anywhere from 1 to 6 points. Each has a roughly 3-point margin of error. But when virtually every Ohio poll reveals an Obama lead, you--and I'm talking to you, CNN--you can't lump them together and then declare the same statistical tie as in the individual polls.
Yet that's precisely what CNN does to arrive at, "locked in a statistical dead heat." It's just not so; not when all the credible polls are, collectively, suggesting the same thing: Obama's ahead.